Railroad Archives Online
- CollectionE0018 - Norm Keyes Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3001 - Steam Locomotives
- 97 more...
- Item40.S.103.06 - Great Northern Steam Locomotive 2552, undated
- Item40.S.103.07 - Great Northern Steam Locomotive 2550, undated
- Item40.S.103.08 - Great Northern Steam Locomotive 2550, undated
- Item40.S.103.09 - Great Northern Steam Locomotive 2551, undated
- Item40.S.103.10 - Great Northern Steam Locomotive 2552 at Hillyard, Washington, 1935
- Item40.S.103.11 - Great Northern Steam Locomotive, undated
- Item40.S.103.12 - Great Northern Steam Locomotive 2552 at Minot, North Dakota, 1952
- Item40.S.103.13 - Great Northern Steam Locomotive 2550 at Hillyard, Washington, 1935
- Item40.S.103.14 - Great Northern Steam Locomotive 2555 at Saint Paul, Minnesota, 1947
- 969 more...